Physical resource investigations for economic development a casebook of OAS field experience in Latin America. - Washington General Secretariat, Organization of American States 1969. - xviii, 439 p. illus. 28 cm. Includes bibliographical references. LCCN: 71607371 //r73 Subjects--Topical Terms: Natural resources--Research--Latin America. LC Class. No.: HC123.5 / .P49 Dewey Class. No.: 333.7/07/208